RH3083MK DICE/DWF - Adjustable 2.8A Single Resistor Low Dropout Regulator

RH3083MK DICE/DWF
Adjustable 2.8A Single
Resistor Low Dropout
Regulator
Features
Description
Outputs May Be Paralleled for Higher Current and
Heat Spreading
n Single Resistor Sets Output Voltage
n Output Adjustable to 0V
n50µA SET Pin Current: 1% Initial Accuracy
n Total Ionizing Dose (TID) Tolerance, per TM1019.8,
MIL-STD-883 up to:
• 200kRad (Si), per Condition A, at 50Rads(Si)/sec
• 100kRad (Si), per Condition D, at 10mRads(Si)/sec
• ELDRS Pass 100kRad(Si)
n Single Event Latchup (SEL) Threshold Linear Energy
Transfer (LET) ≥ 110MeV • cm2/mg at TCASE = 100°C
n MIL-PRF-38535 Class V Compliant
The RH3083 is a 2.8A low dropout linear regulator with a
unique architecture featuring a precision current source
and voltage follower which allows the output to be programmed to any voltage between zero and 18V. Multiple
regulators can be paralleled to increase total output current
and spread heat over a system PC board with no need for
heat sinking. The pass transistor collector can be brought
out independently of the circuit supply voltage to allow
dropout voltage to approach the saturation limit of the
pass transistor. A small 10µF capacitor on the output with
an ESR of less than 0.5Ω is adequate to ensure stability.
Applications with large output load transients require a
larger output capacitor value to minimize output voltage
change. Input circuitry ensures output safe operating area
current limiting and thermal shutdown protection. The
rated output current of an RH3083-based part is fixed by
internal wire length/resistance. Linear Technology dice
element evaluations are based on parts rated for 2.8A
output current.
Dice Pinout
Absolute Maximum Ratings
n
(Note 1) (All voltages relative to VOUT)
PAD FUNCTION
2
1
2
1
2
1
2
1
1.
2.
3.
4.
5.
IN
OUT
SENSE
SET
VCONTROL
DIE CROSS REFERENCE
2
LTC® Finished
Part Number
1
3
5
4
66mils x 113mils
Backside metal: Alloyed gold (K) layer
Backside potential: OUT
Tie SENSE to OUT
Order
Part Number
RH3083MK RH3083MK DICE
RH3083MK RH3083MK DWF*
VCONTROL Pin Voltage..............................................±28V
IN Pin Voltage.................................................18V, –0.3V
No Overload or Short-Circuit......................23V, –0.3V
SET Pin Current (Note 6)......................................±25mA
SET Pin Voltage (Relative to OUT, Note 6)............... ±10V
Output Short-Circuit Duration........................... Indefinite
Operating Junction Temperature
Range (Notes 2, 10)................................ –55°C to 125°C
Storage Temperature Range................... –65°C to 150°C
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Please refer to LT®3083 standard product
data sheet for other applicable product
information.
*DWF = DICE in wafer form.
rh3083mkfa
1
RH3083MK DICE/DWF
Table 1. DICE/DWF Electrical Test Limits
TA = 25°C (Notes 2, 5, 8, 9, 11)
PARAMETER
CONDITIONS
MIN
MAX
UNITS
SET Pin Current (Note 6)
VIN = 1V, VCONTROL = 2V, ILOAD = 1mA
49.5
50.5
µA
Output Offset Voltage (VOUT – VSET)
VIN = 1V, VCONTROL = 2V, ILOAD = 1mA
–2
2
mV
Load Regulation, ISET
ILOAD = 1mA to 50mA
–30
30
nA
Load Regulation, VOS
ILOAD = 1mA to 50mA
–0.5
0.5
mV
Line Regulation, ISET
VIN = 1V to 23V, VCONTROL = 2V to 25V, ILOAD = 1mA
–5
5
nA/V
Line Regulation, VOS
VIN = 1V to 23V, VCONTROL = 2V to 25V, ILOAD = 1mA
–0.008
0.008
mV/V
Minimum Load Current (Note 3)
VIN = 1V, VCONTROL = 2V
VIN = 23V, VCONTROL = 25V
0.5
1
VCONTROL Dropout Voltage (Note 4)
VIN = 1V, ILOAD = 50mA
1.4
V
VIN Dropout Voltage (Note 4)
VCONTROL = 2V, ILOAD = 50mA
25
mV
VCONTROL Pin Current (Note 5)
VIN = 1V, VCONTROL = 2V, ILOAD = 50mA
6.5
mA
mA
mA
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RH3083MK DICE/DWF
Table 2. Electrical Characteristics
(Preirradiation) (Notes 2, 9, 11)
TA = 25°C
PARAMETER
CONDITIONS
MIN
SUB- –55°C < TA < 125°C SUBMAX GROUP
MIN
MAX GROUP UNITS
SET Pin Current (Note 6)
VIN = 1V, VCONTROL = 2V, ILOAD = 1mA
49.5
50.5
1
49
51.5
2, 3
µA
–4
4
1
–6
6
2, 3
mV
–200
200
1
–300
300
2, 3
nA
–4
4
2, 3
mV
Output Offset Voltage (VOUT – VSET) VIN = 1V, VCONTROL = 2V, ILOAD = 1mA
ILOAD = 1mA to 2.8A
Load Regulation, ISET
Load Regulation, VOS
ILOAD = 5mA to 2.8A
–3
3
1
Line Regulation, ISET
VIN = 1V to 23V, VCONTROL = 2V to 25V, ILOAD = 1mA
VIN = 1V to 23V, VCONTROL = 2V to 25V, ILOAD = 5mA
–8
8
1
Line Regulation, VOS
VIN = 1V to 23V, VCONTROL = 2V to 25V, ILOAD = 1mA
VIN = 1V to 23V, VCONTROL = 2V to 25V, ILOAD = 5mA
Minimum Load Current (Note 3)
–10
10
2, 3
nA/V
nA/V
–0.05
0.05
2, 3
mV/V
mV/V
1
1
5
5
2, 3
2, 3
mA
mA
1.4
1.45
1.5
1
1
1
1.55
1.6
1.65
2, 3
2, 3
2, 3
V
V
V
VCONTROL = 2V, ILOAD = 0.1A
VCONTROL = 2V, ILOAD = 1A
VCONTROL = 2V, ILOAD = 2.8A
35
220
650
1
1
1
35
280
750
2, 3
2, 3
2, 3
mV
mV
mV
VCONTROL Pin Current (Note 5)
VIN = 1V, VCONTROL = 2V, ILOAD = 0.1A
VIN = 1V, VCONTROL = 2V, ILOAD = 1A
VIN = 1V, VCONTROL = 2V, ILOAD = 2.8A
10
35
80
1
1
1
10
40
90
2, 3
2, 3
2, 3
mA
mA
mA
Current Limit
VIN = 5V, VCONTROL = 5V, VSET = 0V,
VOUT = –0.1V
2.8
1
2, 3
A
Error Amplifier RMS Output Noise
(Note 7)
ILOAD = 500mA, 10Hz ≤ f ≤100kHz,
COUT = 10µF, CSET = 0.1µF
TYP = 40
1
µVRMS
Reference Current RMS Output
Noise (Note 7)
10Hz ≤ f ≤100kHz
TYP = 1
1
nARMS
–0.02 0.02
1
VIN = 1V, VCONTROL = 2V
VIN = 23V, VCONTROL = 25V
0.5
1
VCONTROL Dropout Voltage (Note 4)
VIN = 1V, ILOAD = 0.1A
VIN = 1V, ILOAD = 1A
VIN = 1V, ILOAD = 2.8A
VIN Dropout Voltage (Note 4)
2.8
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3
RH3083MK DICE/DWF
Table 3. Electrical Characteristics
PARAMETER
CONDITIONS
SET Pin Current (Note 6) VIN = 1V, VCONTROL = 2V, ILOAD = 1mA
(Postirradiation) (Notes 2, 9, 11)
10KRads(Si) 20KRads(Si)
MIN MAX MIN MAX
50KRads(Si) 100KRads(Si) 200KRads(Si)
MIN MAX MIN MAX MIN MAX UNITS
49
51
49
51
49
51
49
51
49
51
µA
Output Offset Voltage
(VOUT – VSET)
VIN = 1V, VCONTROL = 2V, ILOAD = 1mA
–4.5
4.5
–4.5
4.5
–4.5
4.5
–4.5
4.5
–4.5
4.5
mV
Load Regulation, ISET
ILOAD = 1mA to 2.8A
–300
300
–300
300
–300
300
–300
300
–300
300
nA
Load Regulation, VOS
ILOAD = 5mA to 2.8A
–3.5
3.5
–3.5
3.5
–3.5
3.5
–3.5
3.5
–3.5
3.5
mV
Line Regulation, ISET
VIN = 1V to 23V,
VCONTROL = 2V to 25V, ILOAD = 1mA
–10
10
–10
10
–10
10
–10
10
–10
10
nA/V
Line Regulation, VOS
VIN = 1V to 23V,
VCONTROL = 2V to 25V, ILOAD = 1mA
0.03
–0.04
0.04
mV/V
Minimum Load Current
(Note 3)
VIN = 1V, VCONTROL = 2V
VIN = 23V, VCONTROL = 25V
0.5
1
0.5
1
0.5
1
0.5
1
0.5
1
mA
mA
VCONTROL Dropout
Voltage (Note 4)
VIN = 1V, ILOAD = 0.1A
VIN = 1V, ILOAD = 1A
VIN = 1V, ILOAD = 2.8V
1.41
1.46
1.51
1.41
1.46
1.51
1.42
1.47
1.52
1.43
1.48
1.53
1.45
1.5
1.55
V
V
V
VIN Dropout Voltage
(Note 4)
VCONTROL = 2V, ILOAD = 0.1A
VCONTROL = 2V, ILOAD = 1A
VCONTROL = 2V, ILOAD = 2.8A
35
225
655
40
225
655
40
225
655
45
225
660
45
230
670
mV
mV
mV
VCONTROL Pin Current
(Note 5)
VIN = 1V, VCONTROL = 2V, ILOAD = 0.1A
VIN = 1V, VCONTROL = 2V, ILOAD = 1A
VIN = 1V, VCONTROL = 2V, ILOAD = 2.8A
10.1
36
82
10.1
37
83
10.2
38
85
10.5
40
90
11
45
100
mA
mA
mA
Current Limit
VIN = 5V, VCONTROL = 5V, VSET = 0V,
VOUT = –0.1V
Error Amplifier RMS
Output Noise (Note 7)
ILOAD = 500mA, 10Hz ≤ f ≤100kHz,
COUT = 10µF, CSET = 0.1µF
TYP = 40
TYP = 40
TYP = 40
TYP = 40
TYP = 40
µVRMS
Reference Current RMS
Output Noise (Note 7)
10Hz ≤ f ≤100kHz
TYP = 1
TYP = 1
TYP = 1
TYP = 1
TYP = 1
nARMS
–0.025 0.025 –0.025 0.025 –0.025 0.025 –0.03
2.8
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: Unless otherwise specified, all voltages are with respect to VOUT.
The RH3083MK DICE is tested and specified under pulse load conditions
such that TJ ≅ TA.
Note 3: Minimum load current is equivalent to the quiescent current of
the part. Since all quiescent and drive current is delivered to the output
of the part, the minimum load current is the minimum current required to
maintain regulation.
Note 4: Dropout results from either of minimum control voltage,
VCONTROL, or minimum input voltage, VIN, both specified with respect
to VOUT. These specifications represent the minimum input-to-output
differential voltage required to maintain regulation.
Note 5: The VCONTROL pin current is the drive current required for the
output transistor. This current tracks output current with roughly a 1:60
ratio. The minimum value is equal to the quiescent current of the device.
Note 6: The SET pin is clamped to the output with diodes through 1k
resistors. These resistors and diodes only carry current under transient
overloads.
2.8
2.8
2.8
2.8
A
Note 7: Adding a small capacitor across the reference current resistor
lowers output noise. Adding this capacitor bypasses the resistor shot
noise and reference current noise; output noise is then equal to error
amplifier noise (see LT®3083 Data Sheet and Application Note 83).
Note 8: Dice are probe tested at 25°C to the limits shown in Table 1.
Except for high current tests, dice are tested under low current conditions
which assure full load current specifications when assembled.
Note 9: Dice that are not qualified by Linear Technology with a can
sample are guaranteed to meet specifications of Table 1 only. Dice
qualified by Linear Technology with a can sample meet specifications
in all tables.
Note 10: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature exceeds the maximum operating junction temperature when
overtemperature protection is active. Continuous operation above the
specified maximum operating junction temperature may impair device
reliability.
Note 11: Please refer to LT3083 standard product data sheet for Typical
Performance Characteristics, Pin Functions, Applications Information, and
Typical Applications.
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RH3083MK DICE/DWF
Table 4. Electrical Test Requirements
MIL-STD-883 TEST REQUIREMENTS
PDA Test Notes
The PDA is specified as 5% based on failures from Group A, Subgroup 1,
tests after cooldown as the final electrical test in accordance with method
5004 of MIL-STD-883. The verified failures of Group A, Subgroup 1, after
burn-in divided by the total number of devices submitted for burn-in in that
lot shall be used to determine the percent for the lot.
Linear Technology Corporation reserves the right to test to tighter limits
than those given.
SUBGROUP
Final Electrical Test Requirements (Method 5004)
1*, 2, 3
Group A Test Requirements (Method 5005)
1, 2, 3
Group B and D for Class S,
End Point Electrical Parameters (Method 5005)
1, 2, 3
*PDA applies to subgroup 1. See PDA Test Notes.
Total Dose Bias Circuit
4
3V
1µF
3
OUT
IN
CASE
1
VCONTROL
NC
10µF
100Ω
10µF
499Ω
SET
2
10k
Burn-In Circuit
4
40V
1µF
3
OUT
IN
VCONTROL
CASE
1
NC
SET
2
10k
rh3083mkfa
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
5
RH3083MK DICE/DWF
Typical Performance Characteristics
Offset Voltage
50.4
0.8
50.3
0.6
50.2
50.1
50.0
49.9
49.8
0
–0.2
–0.4
49.6
–0.8
100
50
150
TOTAL DOSE (kRADS)
200
0.9
0.4
–0.6
0
IL = 1mA
0.2
49.7
49.5
Minimum Load Current
1.0
MINIMUM LOAD CURRENT (mA)
1.0
OFFSET VOLTAGE (mV)
SET PIN CURRENT (µA)
SET Pin Current
50.5
–1.0
0
100
50
150
TOTAL DOSE (kRADS)
300
250
ILOAD = 1A
150
100
50
0
100
50
150
TOTAL DOSE (kRADS)
0
0.3
0.2
200
0
Current Limit
4.0
VIN = VCONTROL = 5V
VOUT = 0V
3.8
1.2
3.6
1.0
0.8
0.6
0.4
3.4
3.2
3.0
2.8
2.6
2.4
0.2
0
200
100
50
150
TOTAL DOSE (kRADS)
3083 G03
CURRENT LIMIT (A)
MINIMUM VCONTROL PIN VOLTAGE
(VCONTROL-VOUT) (V)
MINIMUM VOLTAGE (VIN-VOUT) (mV)
400
VIN – VOUT = 1V, VCONTROL – VOUT = 2V
0.4
0
200
1.4
ILOAD = 2.8A
200
0.5
Dropout Voltage
(Minimum VCONTROL Pin Voltage)
350
VIN – VOUT = 23V, VCONTROL – VOUT = 25V
3083 G02
Dropout Voltage
(Minimum IN Voltage)
450
0.7
0.6
0.1
3083 G01
500
0.8
ILOAD = 2.8A
0
3083 G04
50
100
150
TOTAL DOSE (kRADS)
200
2.2
2.0
3083 G05
0
200
100
50
150
TOTAL DOSE (kRADS)
3083 G06
Revision History
REV
DATE
DESCRIPTION
A
10/14
IL Min = 5mA; VCONTROL = 2V to 25V; Line Reg ISET and Line Reg, VOS update, added Note 11
PAGE NUMBER
2, 3, 4
ID 66-13-3083
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Linear Technology Corporation
LT 1014 REV A • PRINTED IN USA
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507
 LINEAR TECHNOLOGY CORPORATION 2014